When did some of you mommies start packing your hospital bag? And what was something you're really glad you put in it to…

When did some of you mommies start packing your hospital bag? And what was something you're really glad you put in it to bring with you (I.e certain candy, comfort item, etc.)? I know it's still really early for me but I just want to get an idea because I'm really indecisive and know I'll pack useless stuff if I don't get some sort of direction or ideas of things to pack lol